Why do we say "per egg" instead of "per clutch"

[Dave Green]

It still never changes the clutch's statistics, despite what actually hatches. Real world doesn't change statistics

I never mentioned real world vs. statistics. The genetics/odds work per individual snake/egg. Of course you can apply it to a clutch, or 100 eggs, or 1000 eggs, etc. But at the end of the day it all comes down to the fact that each egg has a 50/50 shot of being a lesser or normal (using your example).

I used the coin flip example as it helps explain the odds. If I had 100 lesser x normal eggs incubating we can all guess that I would get close to 50 lessers and 50 normals but odds are only odds. If the first clutch hatches and I had 8 lessers and 0 normals it may change the results but it only means I beat the odds and it has no effect on future egg or clutch results.

I don't think it's a big deal either way...